ADVERTICEMENT
FAULT CODE 146
Engine Coolant Temperature - Data Valid But Above Normal Operating Range - Moderately Severe Level
Overview
CODE | REASON | EFFECT |
Fault Code: 146 | Engine Coolant Temperature - Data Valid But Above Normal Operating Range - | Progressive power derate |
PID: | Moderately Severe Level. Engine coolant temperature signal indicates engine coolant | increasing in severity from time |
SPN: 110 | temperature is above engine protection warning limit. | of alert. |
FMI: 0/16 | ||
LAMP: Amber | ||
SRT: |
Engine Coolant Temperature 1 Sensor Circuit
Circuit Description
The engine coolant temperature 1 sensor is used by the engine control module (ECM) to monitor the engine coolant temperature. The ECM monitors the voltage on the signal pin and converts this to a temperature value. The engine coolant temperature value is used by the ECM for the engine protection system and engine emissions control.
Component Location
The engine coolant temperature 1 sensor is located in the thermostat housing. Use the following procedure for a detailed component location view. Refer to
Procedure 100-002 in Section E.
Shop Talk
This fault code indicates that coolant temperature has exceeded the engine protection limits for high coolant temperature. Refer to Engine Coolant Temperature Above Normal symptom troubleshooting tree in the QSK19, QSK19 CM850 MCRS, and QSK19 CM2150 MCRS Service Manual, Bulletin 4021592.
Refer to Troubleshooting Fault Code t05-146.
Last Modified: 26-Nov-2012
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